Serving Marshall, CA and surrounding areas
Approved
Free estimates
Warranties offered
Customers say: True professional
"Remove old insulation seal to entry point to make sure no rodents activity and install new insulation"
Serving Marshall, CA and surrounding areas
Approved
Super Service Award Winner
In business since 2012
Free estimates
Small jobs welcome
"Melesio and his team did an excellent job removing old insulation/cleaning, rodent proofing/sealing, and installing new insulation all in one day."
+3137
Serving Marshall, CA and surrounding areas
Approved
In business since 1975
Free estimates
Warranties offered
"Joe Stromberg, project manager, is an excellent asset of the company!!! I was also lucky to have two skillful workers who performed the project. I will definitely recommend SDI Insulation if asked to. Luba"
+22
Serving Marshall, CA and surrounding areas
Approved (Corporate)
In business since 1950
Free estimates
Credit card accepted
"Cruz helped us understand our options and visited twice to finalize the scope of work. Insulation team was punctual and provided expert craftsmanship. Glad I chose Coast."
Serving Marshall, CA and surrounding areas
Approved
In business since 2011
Free estimates
Credit card accepted
"Best for spray foam insulation"
Serving Marshall, CA and surrounding areas
In business since 1974
Credit card accepted
"It feels good after the insulation was done. They did very good work."
+4
Serving Marshall, CA and surrounding areas
In business since 2010
Free estimates
Credit card accepted
"Ron and the crew that came worked very hard installing the radiant barrier. They were polite professional and at the end of the day they cleaned up any debris that fell from the attic. My husband and I were very satisfied with all aspects of the job done by Attic Masters. Thankyou so much!"
+7
Serving Marshall, CA and surrounding areas
In business since 2015
Free estimates
Warranties offered
"Huge difference between 1972 and 2020 insulation! In n out with no hassles and was pretty quick too!"
+156
Serving Marshall, CA and surrounding areas
In business since 2016
Free estimates
Credit card accepted
"They did it great. They were personable, they showed up, they did very well and they set it up for me the air duct system and they didn't charged me for that. The work and their price was awesome."
+18
Serving Marshall, CA and surrounding areas
In business since 2003
Free estimates
"Good customer service and were flexible when scheduling the work to be done. Can already feel a bit temperature difference in the attic where the insulation was done and the finish job makes the attic very bright. We have gained valuable space having had this work done."
Old insulation should be removed when it shows damage, contamination, or heavy deterioration. If you notice water stains, rodent droppings, mold, or large gaps, plan on taking it out to protect your home’s energy performance and indoor air quality. Removing compromised material eliminates health hazards, cuts energy loss, and sets the stage for a safer, more efficient attic—all while keeping utility bills in check.
R-value measures how well insulation resists heat flow—the higher the number, the better it slows heat transfer. The right R-value keeps your home warmer in winter and cooler in summer, saving energy year-round. Match the rating to your climate zone and have a pro verify performance over time, because moisture or settling can lower R-value and cut efficiency.
Attic insulation can stay in place for 80 to 100 years, but its performance often drops after the first 15. As dust, moisture, or mold build up, the material loses R-value and allows heat to escape. Schedule periodic inspections so a pro can tell you when replacement makes sense—helping you keep energy bills down and indoor comfort up.
You can over-insulate an attic. Beyond the recommended R-value, extra layers don’t add efficiency and can trap moisture, leading to mold or reduced performance. A local insulation pro can measure current levels, confirm the right target for your climate, and advise on any adjustments so you avoid future energy or maintenance headaches.
Insulation can be damaged by mold, pests, water leaks, or accidental electrical contact. When the material is compromised, it loses R-value and can introduce health hazards. Removing and replacing affected sections restores efficiency, while routine inspections from a qualified pro help you catch problems early and keep your attic safe and energy-smart.
From average costs to expert advice, get all the answers you need to get your job done.
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